[docs] source of python doc site

[CSJ]

Hello doc team,

I just know  Sphinx yesterday,
and http://docs.python.org/py3k/about.html use it to generate html.

Is any place I can get source of the files(rst, Makefile, etc) to
generate the doc site?
Cause I think it is also good example for me to learn using Sphinx.

Thanks a lot,
Jay